Wierd QuickTime Audio Sync Problem

[MShoulerUK]

This is my first post as I have a problem that has defeated me. From a .vob DVD, I encoded a .mp4 video file with XviD and Nero AAC audio. The playback sync issue is only a problem using QuickTime player, VLC and other media players work just fine; no sync issues. The reason why I need it to work using the QuickTime player is because I want to show the video to a couple of friends in the virtual world of Second Life (http://wiki.secondlife.com/wiki/Category:LSL_Video), which uses the QuickTime codec for displaying videos.

I posted the mp4 video here so people can see what i'm talking about:
*Link Removed*

The problem arises when you open QuickTime, or try to watch online via QuickTime player. As soon as you press play the audio is out of sync, but if you pause the video and press play again, the sync is fine. Also if you move to another part of the video that fixes the sync as well, it just appears that when you first load the video the sync is out? I don't understand myself why that would be the case.

I tried everything from using a different video codec, changing to CBR audio, slicing the video down to 10minutes, everything I tried within the realms of the mp4 container hasn't made a difference. I'm really baffled.

Any help would be deeply appreciated.

[yetanotherid]

Can you post a sample rather than the whole 870mb file?
What program did you use to create the MP4, or to mux the audio and video into an MP4 file?

[MShoulerUK]

I tried two different methods to mux the audio and video into an MP4.

1. The 3ivx MP4 Media Muxer in GraphEdit
2. MeGUI's MP4 Muxer

Both had the same problem with audio sync.

[SeeMoreDigital]

Posting a MediaInfo file report (in full) would be useful too?

[MShoulerUK]

General
Complete name : F:\Diabetes.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 870 MiB
Duration : 1h 31mn
Overall bit rate : 1 336 Kbps
Encoded date : UTC 2011-01-23 13:48:56
Tagged date : UTC 2011-01-23 13:48:56
Writing library : 3ivX

Video
ID : 1
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : 20
Duration : 1h 31mn
Bit rate mode : Constant
Bit rate : 1 204 Kbps
Width : 704 pixels
Height : 400 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.178
Stream size : 784 MiB (90%)
Writing library : XviD 61
Language : English
Encoded date : UTC 2011-01-23 13:48:56
Tagged date : UTC 2011-01-23 13:48:56

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1h 31mn
Bit rate mode : Constant
Bit rate : 130 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 84.4 MiB (10%)
Language : English
Encoded date : UTC 2011-01-23 13:48:56
Tagged date : UTC 2011-01-23 13:48:56

[MShoulerUK]

Hmm I just realized i'm getting the same audio sync problem with all videos using QuickTime player now, even ones which worked fine in the past. I never used to have this problem. I wonder what's changed?

Glad to know there's nothing wrong with the encode, but still just as frustrating.

EDIT: Looks like i'm not the only one having this problem http://discussions.apple.com/thread.jspa?threadID=2650113&start=0&tstart=0

[SeeMoreDigital]

Hmm I just realized i'm getting the same audio sync problem with all videos using QuickTime player now, even ones which worked fine in the past. I never used to have this problem. I wonder what's changed?
From what I remember... When you install 3ivx, its splitter and decoder takes over some of Quicktime players functionality.

I suggest you try removing 3ivx or playing your .MP4 file on another computer without 3ivx installed.

That said. I have found, Quicktime player seems much happier playing MPEG-4 AVC + AAC-LC in .MP4 encoded files.

[MShoulerUK]

I was having the same problem with MPEG-4 AVC encodes, but after deleting iTunes the problem is fixed. Amazing what crap they can make these days, the obvious mistake was installing iTunes on my machine.